v3.25.2
Significant Accounting Policies (Schedule of Revision of Previously Issued Consolidated Statements of Income and Statements of Comprehensive Income) (Detail) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense) $ 442 $ 243 $ 452 $ 366
Interest and related charges 505 [1] 470 [1] 986 [2] 1,045 [2]
Income from continuing operations including noncontrolling interests before income tax expense 1,033 578 1,785 959
Income tax expense 220 [1] 112 [1] 260 [2] 208 [2]
Net Income From Continuing Operations Including Noncontrolling Interests 813 466 1,525 751
Net income including noncontrolling interests 814 563 1,525 966
Net income (loss) attributable to Dominion Energy 760 563 1,425 966
Amounts Attributable to Dominion Energy        
Net income from continuing operations 759 466 1,425 751
Net Income (Loss) $ 760 $ 563 $ 1,425 $ 966
EPS - Basic        
Net income from continuing operations $ 0.88 $ 0.52 $ 1.65 $ 0.84
Net income attributable to Dominion Energy 0.88 0.64 1.65 1.1
EPS - Diluted        
Net income from continuing operations 0.88 0.52 1.65 0.84
Net income attributable to Dominion Energy $ 0.88 $ 0.64 $ 1.65 $ 1.1
Changes in unrealized net gains (losses) on investment securities [3] $ (2) $ 5 [4] $ 9 $ (17) [4]
Total other comprehensive income (loss) 5 11 7 8
Comprehensive Income        
Comprehensive income including noncontrolling interests 819 574 1,532 974
Comprehensive income attributable to Dominion Energy 765 574 1,432 974
As Previously Reported        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense)   238   357
Interest and related charges   469   1,043
Income from continuing operations including noncontrolling interests before income tax expense   574   952
Income tax expense   91   146
Net Income From Continuing Operations Including Noncontrolling Interests   483   806
Net income including noncontrolling interests   580   1,021
Net income (loss) attributable to Dominion Energy   580   1,021
Amounts Attributable to Dominion Energy        
Net income from continuing operations   483   806
Net Income (Loss)   $ 580   $ 1,021
EPS - Basic        
Net income from continuing operations   $ 0.54   $ 0.9
Net income attributable to Dominion Energy   0.66   1.16
EPS - Diluted        
Net income from continuing operations   0.54   0.9
Net income attributable to Dominion Energy   $ 0.66   $ 1.16
Changes in unrealized net gains (losses) on investment securities [4]   $ 7   $ (19)
Total other comprehensive income (loss)   13   6
Comprehensive Income        
Comprehensive income including noncontrolling interests   593   1,027
Comprehensive income attributable to Dominion Energy   593   1,027
Adjustments        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense)   5   9
Interest and related charges   1   2
Income from continuing operations including noncontrolling interests before income tax expense   4   7
Income tax expense   21   62
Net Income From Continuing Operations Including Noncontrolling Interests   (17)   (55)
Net income including noncontrolling interests   (17)   (55)
Net income (loss) attributable to Dominion Energy   (17)   (55)
Amounts Attributable to Dominion Energy        
Net income from continuing operations   (17)   (55)
Net Income (Loss)   $ (17)   $ (55)
EPS - Basic        
Net income from continuing operations   $ (0.02)   $ (0.06)
Net income attributable to Dominion Energy   (0.02)   (0.06)
EPS - Diluted        
Net income from continuing operations   (0.02)   (0.06)
Net income attributable to Dominion Energy   $ (0.02)   $ (0.06)
Changes in unrealized net gains (losses) on investment securities [4]   $ (2)   $ 2
Total other comprehensive income (loss)   (2)   2
Comprehensive Income        
Comprehensive income including noncontrolling interests   (19)   (53)
Comprehensive income attributable to Dominion Energy   (19)   (53)
Virginia Electric and Power Company        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense) 80 39 106 103
Interest and related charges [5] 251 [6] 204 [6] 494 [7] 394 [7]
Income before income tax expense 704 597 1,325 1,191
Income tax expense 115 [6] 120 [6] 205 [7] 253 [7]
Net income including noncontrolling interests 589 477 1,120 938
Net income (loss) attributable to Dominion Energy 535 477 1,020 938
Amounts Attributable to Dominion Energy        
Net Income (Loss) 535 477 1,020 938
EPS - Diluted        
Changes in unrealized net gains (losses) on investment securities [8] (2) 0 [9] 0 (4) [9]
Total other comprehensive income (loss) 0 3 (5) 7
Comprehensive Income        
Comprehensive income including noncontrolling interests 589 480 1,115 945
Comprehensive income attributable to Dominion Energy $ 535 480 $ 1,015 945
Virginia Electric and Power Company | As Previously Reported        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense)   38   101
Interest and related charges   204   394
Income before income tax expense   596   1,189
Income tax expense   117   245
Net income including noncontrolling interests   479   944
Net income (loss) attributable to Dominion Energy   479   944
Amounts Attributable to Dominion Energy        
Net Income (Loss)   479   944
EPS - Diluted        
Changes in unrealized net gains (losses) on investment securities [9]   1   (4)
Total other comprehensive income (loss)   4   7
Comprehensive Income        
Comprehensive income including noncontrolling interests   483   951
Comprehensive income attributable to Dominion Energy   483   951
Virginia Electric and Power Company | Adjustments        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Other income (expense)   1   2
Interest and related charges   0   0
Income before income tax expense   1   2
Income tax expense   3   8
Net income including noncontrolling interests   (2)   (6)
Net income (loss) attributable to Dominion Energy   (2)   (6)
Amounts Attributable to Dominion Energy        
Net Income (Loss)   (2)   (6)
EPS - Diluted        
Changes in unrealized net gains (losses) on investment securities [9]   (1)   0
Total other comprehensive income (loss)   (1)   0
Comprehensive Income        
Comprehensive income including noncontrolling interests   (3)   (6)
Comprehensive income attributable to Dominion Energy   $ (3)   $ (6)
[1] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[2] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[3] Net of $(1) million and $(4) million tax for the three months ended June 30, 2025 and 2024, respectively, and net of $(8) million and $10 million tax for the six months ended June 30, 2025 and 2024, respectively.
[4] As previously reported, net of $(2) million and $8 million tax for the three and six months ended June 30, 2024, respectively. As revised, net of $(4) million ($(2) million adjustment) and $10 million ($2 million adjustment) tax for the three and six months ended June 30, 2024, respectively.
[5] See Note 19 for amounts attributable to affiliates.
[6] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Virginia Power’s CODM.
[7] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Virginia Power’s CODM.
[8] Net of $— million and $(1) million tax for the three months ended June 30, 2025 and 2024, respectively, and net of $— million and $1 million tax for the six months ended June 30, 2025 and 2024, respectively.
[9] As previously reported, net of $- million and $1 million tax for the three and six months ended June 30, 2024, respectively. As revised, net of $(1) million ($(1) million adjustment) and $1 million ($- million adjustment) tax for the three and six months ended June 30, 2024, respectively.